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Bearing sleeve processing technology

A processing technology, a technology for bearing bushings, applied in the processing technology field of bearing bushings, can solve the problems of short service life, poor hardness, poor wear resistance, increased maintenance costs, etc., to achieve stable internal organization, prolong service life, and improve resistance. abrasive effect

Active Publication Date: 2015-08-12
WUXI YITONG PRECISION MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the bearing bushes produced by ordinary technology on the market still have a lot of austenite in the internal structure after the quenching process, which is not stable enough, which greatly affects the performance of the bearing bushing, and its hardness and wear resistance are relatively high. Poor, resulting in a shorter service life, which greatly increases maintenance costs

Method used

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  • Bearing sleeve processing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In this embodiment, a processing technology of a bearing bush includes the following steps:

[0026] a. Material selection: choose bearing steel with high hardenability as raw material, and the chemical composition content of the bearing steel is 0.9% carbon content; 0.25% silicon content; 0.45% manganese content; 0.03% phosphorus content; 0.025% sulfur content; Content 1.15%;

[0027] b. Forging: forging a blank according to the size;

[0028] c. Turning: turn the blank to the designed size;

[0029] d. Quenching: Preheat the processed workpiece at 630°C for 45 minutes, then raise the temperature to 830°C for 60 minutes, and then place the workpiece in quenching oil for quenching. The temperature of the quenching oil is 70°C;

[0030] e. Washing: Use alkaline cleaning agent to clean the quenched workpiece;

[0031] f. Tempering: Temper the washed workpiece at 230°C for 200 minutes;

[0032] g. Cooling: Cool the tempered workpiece at room temperature to cool the wor...

Embodiment 2

[0037] In this embodiment, a processing technology of a bearing bush includes the following steps:

[0038] a. Material selection: choose bearing steel with high hardenability as raw material, and the chemical composition content of the bearing steel is 0.9% carbon content; 0.25% silicon content; 0.45% manganese content; 0.03% phosphorus content; 0.025% sulfur content; Content 1.15%;

[0039] b. Forging: forging a blank according to the size;

[0040] c. Turning: turn the blank to the designed size;

[0041] d. Quenching: Preheat the processed workpiece at 670°C for 15 minutes, then raise the temperature to 870°C for 30 minutes, and then place the workpiece in quenching oil for quenching. The temperature of the quenching oil is 80°C;

[0042] e. Washing: Use alkaline cleaning agent to clean the quenched workpiece;

[0043] f. Tempering: Temper the washed workpiece at 250°C for 160 minutes;

[0044] g. Cooling: Cool the tempered workpiece at room temperature to cool the wor...

Embodiment 3

[0049] In this embodiment, a processing technology of a bearing bush includes the following steps:

[0050] a. Material selection: choose bearing steel with high hardenability as raw material, and the chemical composition content of the bearing steel is 0.9% carbon content; 0.25% silicon content; 0.45% manganese content; 0.03% phosphorus content; 0.025% sulfur content; Content 1.15%;

[0051] b. Forging: forging a blank according to the size;

[0052] c. Turning: turn the blank to the designed size;

[0053] d. Quenching: Preheat the processed workpiece at 650°C for 30 minutes, then raise the temperature to 850°C for 45 minutes, and then place the workpiece in quenching oil for quenching. The temperature of the quenching oil is 75°C;

[0054] e. Washing: Use alkaline cleaning agent to clean the quenched workpiece;

[0055] f. Tempering: Temper the washed workpiece at 240°C for 180min;

[0056] g. Cooling: Cool the tempered workpiece at room temperature to cool the workpiec...

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Abstract

The invention discloses a bearing sleeve processing technology, which comprises the following steps: a)choosing material; b)forging; c)performing turn-milling; d)quenching; e)washing; f)tempering; g)cooling; h)refrigerating; and i) grinding. The processing technology employs bearing steel with high hardenability as a raw material, and processes of forging, performing turn-milling, quenching, washing, tempering, cooling, refrigerating, and grinding are carried out, internal structure of a bearing sleeve is stable, internal residual austenite is controlled less than 1%, wear resistance is increased, through tests, the bearing sleeve produced by the above technology enables continuous operation for 24000 hours at 175 DEG C, and usage life can be greatly prolonged.

Description

technical field [0001] The invention relates to a processing technology of a bush, in particular to a processing technology of a bearing bush. Background technique [0002] Bearing bushings are an important part of contemporary mechanical equipment. At present, the bearing bushes produced by ordinary technology on the market still have a lot of austenite in the internal structure after the quenching process, which is not stable enough, which greatly affects the performance of the bearing bushing, and its hardness and wear resistance are relatively high. Poor, resulting in a shorter service life, which greatly increased maintenance costs. Contents of the invention [0003] The object of the present invention is to provide a processing technology for a bearing bush, which has the characteristics of high hardness, good wear resistance and long service life. [0004] The purpose of the present invention is to realize through the following technical solutions: [0005] A pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/14
Inventor 易阳
Owner WUXI YITONG PRECISION MACHINERY